Around 4,000 years before present (YBP), the paternal lineage of E-Y18629 took shape as it diverged from the common ancestor E-Y17859 branch.
The most recent common ancestor (TMRCA) of this branch is estimated to have been born around 3,000 years before the present (YBP).
See it on 
YTree
SNPs
Currently defining this branch
Y18639, Y56572, FT17164, FT18121, Y300172/Y482500(H), Y18630, Y18629, Y18646, Y168361, Y18633, A1170.
Samples
Within our knowledge, E-Y18629 is the ancestor of 69 Somali samples.
Sub-branches
61 sub-branches with Somali samples